Mold for making reinforced-concrete blocks.



G. G. HENKLE. MOLD FOR MAKING REINFORCED CONCRETE BLOCKS.

APPLICATION FILED MAR. 29, 1918.

1,109,753, Patented Sept. 8, 1914.

2 SHEETSSHEET l.

G. O. HENKLE.

- MOLD FOR MAKING REINFORCED CONCRETE BLOCKS.

APPLICATION FILED MAR. 29, 1913.

v1 ,109,753 Patented Sept. 8, 1914.

2 SHEETS-SHEET 2.

K 79265265 wit 677 i611" UNITED sTA E s PATENT OFFICE.

GUY C. HENKLE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE HUB-ST SILO COMPANY,

' OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MOLD FOR MAKING REINFORCEDCONCR-ETE BLOCKS.

Specification of Letters Patent.

Patented se t. s, 1914.

Application filed March 29, 1913. Serial No. 757,639.

To all whom it may concern Be it known that I, GUY C. HENKLE, a citizen of the United States, residing at Chicago, in the county ofC-ook, in the State of Illinois, have invented certain new and useful Improvements in Molds for Making Reinforced-Concrete Blocks, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to a mold for making reinforced concrete. blocks and has for its object to improve the construction and arrangements of devices of this sort in sun- (lry respects hereinafter pointed out.

More particularly my invention has for its object the provision of a mold for making the form of block shown, described and claimed in an application filed by Charles B. Hurst, Serial No.. 757,655 on March 29, 1913, which block has embedded therein one or more reinforcing rods with their ends bent substantially at right angles and lying in recesses formed in the ends of the block so that adjacent blocks may be firmly tied together by links which engage the bent ends of the rods. have accomplished these objects are illustrated in the accompanying drawings and are hereinafter specifically described. That which I believe to be new is set forth in the claims.

In the drawings,Figure 1 is a top view, partly broken away, of my improved mold; Fig. 2 is a section taken on line 22 of Fig. 1; Fig. 3 is a section taken on line 8 3 of Fig. 1; Fig. '4: is a section taken on lined-"I of Fig. 2; Fig. 5 is an enlarged detail of one of the tie rod supporting members, being a section through such member taken on a line extending transversely of the mold; and Fig. 6 is a detail, being a partial section on line 6-6 of Fig. 5.

Referring to the several figures of the drawings,10 indicates a base-plate of sheet metal or of any other suitable material.

11-12 indicate plates provided with transversely extending pins 13 at one edge adapted to be inserted through suitable openings in the plate 10 for holding the plates 11 and 12 firmly relative to said plate 10.

let indicates a curved plate provided with wings 15 adapted to pass through suitable slots in the ends of the plates 1112, as best shown in Fig. 4, 1

16 indicates a curved transverse plate at The means by which I the other end of the 'mold provided with wings 17 also adapted to pass through suitable slots in the plates 1112.

18 indicates pins passing through suitable openings in the wings 15-17 adapted to hold the plates 11-12 firmly in position relative to the plates l416.

19 indicates a bracket mounted upon the base-plate 10 against which the plate 14; bears.

20 indicates angle irons secured in any suitable manner to the plates l1-12 for the purpose of strengthening such plates.

As 'best shown in Fig. 1 each of the plates 11-12 is provided with a plurality of blocks 21 mounted upon the plate and spaced a short distance apart thereon. In the construction shown these blocks 21 are hollow 'members formed of sheet metal, but they indicatessupports mounted on the rear.

faces of the plates 14, 22, 23' and 24 at their ends, each ofsaidsupports being mounted upon its plate through the med i11m of a lip 26 which, as shown in Fig. 6, is riveted or otherwise secured to the plate. Each of the supports 25 is substantially in the form of a segment of a frustum of a cone with ,the large end forward. Each of the supports 25 is provided with a groove 27 in its outen face, whereby two oppositely disposed supports 25 at op osite ends of one of said plates are adapte to support a tie rod 28, the turned ends of which rest in said grooves 27, the outer ends of said supports being slotted for a short distance, as best shown in Fig. 3, for the reception of the tie rods. In the construction shown the supports 25 are formed of sheet metal, but I do not restrict myself to this construction except as hereinafter specifically claimed.

29 indicates wedge shaped members mounted upon the blocks 21 in position to enter the outer edges ofthe grooves 27 when the parts are assembled for the molding operat-ion, said wedges having the effect of separating the grooves 27 slightly beyond the normal for the purpose hereinafter set forth.

30 indicates plates mounted on the blocks 21 at right angles to the plates 11-12 inplates. When the wedge-shaped members 29' are withdrawn in this manner from the grooves 27 the resiliency of the supports 25 causes contraction to normal condition, thus freeing the supports 25 from contact with the concrete. In case the resiliency of the supports 25 is not of sufficient force to free the support from the block a slight pressure upon the outside faces of said supports by means of a suitable tool readily serves to' loosen the support from the block. By reason of the support 25 being mounted along its inner face only by means of thelip 26 it will be readily understood that the support can be forced very Slightly outward away from the block if necessary in order to free the support from the block. The concrete blocks can then readily be removed from the transverse plates, the turned ends of the tierods 28 being free to slip out of the grooves 27 In the construction shown the blocks 21 are so proportioned that the faces thereof which form the walls of the mold are radial to the circle about which the transverse plates 22*are curved.

It will be understood that the mold may comprise any desired number of compart-v ments so that a number of concrete .blocks may be made at a single operation. By the construction described the parts of the mold may readily be separated to facilitate the re moval of the concrete blocks and may readily be re-assembled to receive a new charge.

While I have described the construction illustratedwith considerable particularity I Wish it to be understood that my invention is not to be limited to the specific construction shown except in so far as that is par ticularly claimed, as various modifications may be made without departing from the spirit of the invention, which is generic in character, particularly with reference to the means employed for forming the recesses in the ends of the blocks and holding the reinforcing rods in position.

What I claim as my invention and desire to secure by Letters Patent is 1. A mold for making concrete blocks comprising side and end members forming a receptacle for the concrete, one of said members having means projecting into said receptacle and provided with a recess to receive the end of a tie rod, the adjacent member having means for covering said recess.

2. A mold for making concrete blocks comprising side and end members forming a receptacle for the concrete, one of said side members having means projecting into said receptacle and provided with a recess to receive the end of a tie rod, one of the adjacent end members having a cover for closing said recess.

3. A mold for making concrete blocks comprising separable side and end members forming a receptacle for concrete,one of said members having expansible means projecting into said receptacle provided with a substantially inclosed recess to receive and protect the end of a tie rod, and one of the adjacent members h aving means for expanding said expanslble means.

GUY C. HENKLE. Witnesses:

J OHN L. J AOKSON, W. H. DE BUSK. 

